Doffing mechanism for spinning frames



'N. B. NEWSHOLME. norrms MECHANISM FOR SPINNING FRAMES.

APPLICATION FILED OCT. 30. I918,

2 SHEETS-SHEET I.

N. R. NEWSHOLME. DOFFING MECHANISM FOR SPINNING FRAMES.

APPLICATION FILED OCT. 30- I918- U m2 M I Mm A w mm H y h 0% UNITED STATES: OFFICE.

NORMAN nonnn'r. NEWSHOLME, KEIGHLEY', ENGLAND,

DO-FFING omma FOR srrN FRAMES}.

T 0 all uihom it mag concern Be it known that I, NORMAN ROBERT NEWSHOLME, subject of the Kin of Great Britain and Ireland, residing at outhlands,

Keighley, in the county of York, England, have invented new and useful Improvements in and-Relating to Dofling Mechanism for Spinning-Frames, of which the following is a specification. v

This invention relates to improvements in doffing mechanism for spinning frames and refers more particularly to that class of doffing mechanism 1n which is employed. duplicate spindle rails and spindles thereknown in the specification of Letters Patent No. 24392 granted to me'under date Oct. 28th 1913. In this case the mechanism comprised duplicate rails and spindles therefor adapted to carry caps or fliers combined with rack members andslides for transferring one rail from a sp1nn1ng to a setting position the other from the setting position to a spinning one the movement being first horizontal and then vertical. The present invention is an improvement in or modification of the before mentioned invention and deals with duplicate spindle rails and lifter plates which are each transferable from the setting to the spinning position and vice versa. One rail or like balancing the other, and as one rail is moved out of the spinning position,

the other moves in. The rails or like can hardly be said to be generally'mounted on supports or in slides and will have a movement up and down only in such supports or in such slides. The arrangement and construction is one which lends itself readily to ordinary cap, fly, or ring spinning frames.

In describing my invention in detail reference is made to the accompanying sheet of drawings similar letters indicating similar parts in which Figure 1 represents an elevation ofa portion of a frame with my improvement added as applied to a cap spinning frame.

Fig. 2 represents a view of the guide rods and balancing means for the rails.

Fig. 3 represents a section with a plate in position. Fig. 4 represents details of the guard cutter device hereinafter referred to.

Fig. 5 represents an elevation of a portion of a frame with my improvement added thereto as applied to a fly spinning frame.

guard V Specification ofLettersiPatent. I

and 1 be detachable as they will -mechanism and connections.

Fig. 8 represents in plan the lifter rails or plates with a cut away portion hereinafter described and y Fig. 9rrepresents a section through a cutter bar and means for carrying same.

Fig. 10 isan enlarged detail side view showing the apparatus for stopping the rotation of the spindle-elevating shaft.

Figs. 11 and 12 are fragmentary side elevations, on an enlarged scale,of the means for tilting the rear spindle rail, Fig. 12 be mg a view at right angles to Fig. 11.

Fig.- 13 is a fragmentary side elevation, on anenlarged scale, illustrating one manner of forming a hinge in the depending rods for positioning the lifter rails. I

In carrying my invention into effect, I will make no reference to holding devices employed in dofling mechanism in connection with fliers or caps, nor with arrange- Patented Sept. 21 192,0. App1icatit'n filed. October 30, 1918. Seria1'1 To." 2 60,385.

ments for releasing the tapes or driving one with another, but which move from the splnnlng to setting position each in its own course, I will describe that form which I anticipate will give the best results in the simplest manner, understood that I may arrange the balanced rails in other ways thanthat hereinafter set forth. I

Each of the spindle rails S S" 'sayfor a cap doflin machine carries its own set of spindles S 2 and its own lifter plate L L", the whirls and tubes being of the ordinary pattern and driven in the ordinary manner, but the driving tapesmay be freed from the whirls during doffing in any known manner; Each rail is mounted on its own guide rods or slides G G, there being a suitable number, arranged bypreference to form as it were two sides of a triangle, a supporting or connecting member at the base forming the third side, and during spinning one spindle rail S say the rear one will'form the apex of such triangle.' be engaged by suitable lifting rods L in any convenient manner and will also carry de- 1 The lifter plates will although I wish it to be or chain C up into spinning position. The

' is in spinning .position by means of a pulley Suitable brackets will embrace, the guide rods and carry the spindle rails S and S", the connection of each rail to its own" guide rods being s1m1lar.

The shaft'C is rotated by means of a suitablehand wheel C after the spinning is finished thereby to move the full spindle rail, as for instance S, out of spinningposi-v tion, the rail sliding downward on its guides G, while the other rail is pulledby the cord shaft C is held against rotation when a rail or roller Cf (Figs. 1 and 10) secured on the shaft and provided in its periphery With a pair of diametrically oppositely disposed recesses C, a handle C being pivoted above said drum C and having a depending lug C adapted to contact with one of the walls ofsaid recesses and so prevent rotation of the shaft. For example the full rail may move down the rear guides and the empty one up the front guides. The'lifter depend ing rods L L will corne in'v contact with the ground see Fig. 1, and hold the lifter rail and bobbins While the spindle rail descends.

Means will be provided to tilt the rear spindle rail in order to facilitate setting, such as by narrowin the guide rod G at or ,to-

ward-its base (I and by providing a slot G in the railsupporting bracket G which will allow such narrowed portions to pass and a catch, arm or, projection H or like may. be provided on the frame and adapted to contaetiwith the rail 3* at the proper time to tilt the same,'as shown in Fig. 12,

to, effect such tilting. Thedepending rods L for positioning the lifter rail and bobbins may be provided with knuckles or hinges L preferably as shown in Fig. 13 to allow same to bend in order-to clear or pass mechanism which would otherwise tend to obstruct the movement of the rails.

A suitable guard plat'e A hinged tothe form of sliding cutter A well known. This arrangement may not be essential for every form of spinning frame, but it has advantages which will be obvious.

Suitablemeans for severing the yarn will be provided such for example as ordinary notched flanges on, the tubes or revolving spindles-when such are used,or theedge of the guard plate hereinbefore mentioned which may itself be the cutter, as shown in Fig. 4.,

This guard plate-:A may beturned out of position against the action of a spring A arranged somewhat as shown in Figs. 1 and 3. I

The first operation is to lower the lifter rails to their lowest position, and then disengage them'from the rods. One method of disengagement is to carry from the upper end of the lifter rods a bracket or rod.

which normally engages the lifter rail. This bracket or rod is slidably mounted on the lifter rod, and is pushed or pulled out of engagement with the lifter plate by any suitable means for example.

It will be seen that the parts areosimple and the operation practically-one movement, that is, one rail, balanced by the other moves from spinning to setting position and the other from setting to spinning position, each rail moving up and down on its. own sup ports or in its own guides at a slight angle; the rear one toward the frame and the front one slightly away from it on the downward movement. The rails are interchangeable only as to spinning position.

The actual operation of moving, the rails is carried out by one shaft or handle and when fliers and caps do not requireto be held as is the case when thespindles are-dead and'fiiers are held independent thereof, a 7

simple dofing movement is evolved by using the. guide rails or slides, and mounting thereon the lifter plates which carry the spindles. These plates are balanced and are operated from anessential spinning motion namely the lifter-motion, and the complete doffing motion is carried out byturning the operating shaft one revolution or part of a revolution in one direction and then returning-thev shaft and its handle to the original position, there beingcombinedwith the mechanism a suitable yarn severing device. This mechanism is hereinafter described. It being understood in this case spindle, rails per 86 are not required, the lifter railsand their spindles (each set) being moved in their respective paths, on their slides or guides andan end-wise movement being given. to the rails to clearthe lifting rods.

In the form of mechanism forfiierframes having their spindles carried on the lifter;

rails and the fliers independent ofthe spindles-and driven from above, I havewhere.

possible in the drawings used the same letters of reference as those used in the first mentioned form to designate similar parts and S S represents rails.

The lower rail B carries hollow supporting members B within which the lifter rods L operate, such rods being operated from a shaft C having a chain connection C to the lifter motion, that is to say this shaftC? the spindle or lifter.

is rotated by :the lifter mechanismtduring V spinning and the lifter'rods are operated from the shaft C therebeing a chain: conend of this shaft like C Fig. 7 is driven .a clutch member 0 having engaging faces 0 O to engage slidable'but nonrevoluble collars O O on the lower shaft 0 suitably carried as by bearings O upon the lower rail B. At each pulleys 0 Fig. 6 having connections to the slides, holders, or carriers G which operate on the guide rods be a suitable number of guide rods and'carriers with connections .to the shaft 0 one' only being shown in Fig. 6. Each carrier G carries a support G on which its respective rail S or S will rest when lowered thereon by lowering the lifter rails through the lifter motion, each lifter rail will carry an extension or arm S adapted to embrace the guide or like.

The lifter rods L engage the rails S and S by means of a side bracket L Fig. 7, the nose L of the said rod entering an aperture S in the rails tapered outward, toward the rear edge on the front rail, and toward the front edge in the in Fig. 8, to enable the rails to be interchanged as to position with reference to the common lifting rods. As one rail descends or rises it is given an end-wise movement by forming on the guides cam like projections G Flgs. 5 and 6. As the rails move down the guides, the end brackets S will follow the path of the guide and so move outward and on encountering the projections G also move endwise and so clear the lifting rods by permitting the side bracket L to be positioned in the aperture, the nose L following the taper side of the aperture. The upward motion of the other rail places it in position on the lifter rods, it being understood that the guide rods are farther apart top.

During the downward motion of the rails it is necessary to actuate the shaft 0 as the carriers G do not of necessity move up or down the full extent of the travel of the spindle rails. The lowering of the. lifter rods lowers one rail on to its support G and then the lifter rod has no further action until it is required to raise the other rail, therefore each rail carries a downwardly projecting finger such as F Figs.' 5 and 7 that on the front rail being adapted in falling to engage and operate a clutch lever which puts the shaft 0 into gear with the clutch member 0 in one direction and so operates the slides in the desired direction. The rear rail finger F as it descends operates the shaft 0 in the other direction by engaging through clutch lever F the collar 0 and member O, change of direction being given through a train of wheels O are chain wheels or or like G G. There may back rail as shown toward their base than at theand chain or like wheels 0", Figs. 5 and T. To facilitate setting, the rear rail may be tilted by forming fingersT on same to engage, as it nears the lowest position, fin-v gers or projections suitably mounted on the machine frame or on the floor, illustration of such projections being omitted for the sake of clearness. I Some device is necessaryto enable the operating shaft C to be actuated withoutoperating on the lifter mechanism, therefore the lifter chain or like wheel C is mounted loosely on its shaft and provided with a suitable clutch mechanism. attached to the shaft.

' the shaft C ma be operated without turning the wheel a simple form is shown in Fig. 5 wherein on the handle C is mounted a lever 0 adapted through a finger G to pull against the action of a spring C, a sliding collar C having thereon a stop or like pin (not shown) normally in engagement with an indent, recess, or like formed in the hub portion C of wheel C.

To operate the mechanism and dofi, the before mentioned clutch is released, the handle turned in one direction, the rail to be lowered is moved down by the lifter rods and its own weight until the carriers are reached, a further partial turn of the handle (the lower shaft now operating) causes one carrier to be lowered and the other raised, the endwise movement. of the rails taking place about this time. The operating handle is then returned to itsoriginal position, the lifter rods engaging and bringing the empty rail up into spinning position. The yarn is severed and spinning is resumed, the whole operation being exceedingly quick and simple.

Some severing device is necessary and I have devised means whereby one cutter may serve both rails. Each rail is provided with a series of U shaped holders P. On the front rail they project to the back, and on the back rail to the front.- I V In one set of holders I mount on suitable clip like feet P Fig. 9 a cutter bar P of the notched or sliding variety preferably one 7 consisting of two stationary edges as shown in section in Fig. 9 with one notched sliding bar P acting in between. The holders of one rail are not opposite those of the other. As one rail falls the holders of the falling rail leave the cutter and those of the ascending one embrace same and thus one cutter serves both rails. I

To insure the cutter assuming a correct position I mount the holders P on their rails so as to give them a spring or yielding action downward and as the rails are raised the ends of the cutter bars will come into contact with suitable stops such as I Fig. 5 and deplress the cutters and their holders.

aving explained my construction what I claim as my invention anddesire to secure by Letters Patent is:

l. Dofli'nginechanism for spinning frames comprising, in combination duplicate spindle carrying rails, with fixed guides for each rail, said guidesbeing inclined one to the other to alloiv the rising and falling rails-to pass. 7

2. Dofling mechanism for spinning frames comprising, in combination duplicate spindle carrying'rails adapted to move up and down each in its own path and-a guard plate to protect the front bobbins and also act as a severing device for the yarn.

V3. Dofling mechanism for spinning'frames comprising, in combination duplicate spin dle carrying rails each operating in its own path into and out of spinning position, lifter rods therefor and means connected With the said path to give an endwise movement to the rails thereby to clear said lifterrods.

' descent of either 4. Dofiing mechanism for spinningframespath into and out-of spinning position, lifter rods therefor and means operative during such movement to disengage and engage-the lifter rods from the rails.

5L Dofling mechanism for spinning frames" comprising duplicate spindle carrying rails, each operating in its o n separate path into and out of spinning position, lifter rods therefor, a rotatable shaft for operating said lifter rods,

said shaft.

and means operative on the of said" rails for rotating In testimony whereof I have signed my itness LEW WAUGH. 

